Using regex function to manipulate string in c#

Question

I would like to remove jsessionid=99171C97AE28712E048E321DB6B192F3 from the string below using regex in c#

www.ploscompbiol.org/article/fetchObjectAttachment.action;jsessionid=99171C97AE28712E048E321DB6B192F3?uri=info%3Adoi%2F10.1371%2Fjournal.pone.0066655&representation=XML

I have tried

string id = id.Replace(";jsessionid=.*?(?=\\?|$)", "");

but it is not working, please help!

That's `string.Replace`, not `Regex.Replace`. Also, there's no way I'm downloading a file from a site I don't know. Post the actual XML. — It'sNotALie., Jun 11 '13 at 17:37
I do not thinking posting the actual XML would make any difference. I only need to stop `jsessionid` from appending to the url or remove it. — Mobola Oladapo, Jun 11 '13 at 17:43

score 1 · Accepted Answer · answered Jun 11 '13 at 17:40

1

Regex.Replace(text, "jsessionid=[^\\?]+","")

answered Jun 11 '13 at 17:40

Tim B

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greedybuddha · Answer 2 · 2013-06-11T17:44:43.200

0

You can use the following to remove the jsession.

Regex rgx = new Regex("jsessionid=[^\\?]*)");
string id = rgx.Replace(line,"");

edited Jun 11 '13 at 17:44

answered Jun 11 '13 at 17:38

greedybuddha

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string.Replace is not working and surfing through this site, some suggested string.replaceAll, which i cant find. – Mobola Oladapo Jun 11 '13 at 17:44
They might have been talking about Java which has a `replaceAll` method. For this just use the regex replace – greedybuddha Jun 11 '13 at 17:46

score 0 · Answer 3 · answered Jun 11 '13 at 17:42

In case you change your mind and you don't want to use RegEx but manage with string.replace function,

        string sample = "ansjsessionid=99171C97AE28712E048E321DB6B192F3wer";
        sample = sample.Replace( sample.Substring(sample.IndexOf("jsessionid="),43),"");

Note that I've assumed that ID is always 32 character long.

score 0 · Answer 4 · answered Jun 11 '13 at 17:50

Solution not using Regex:

var url = @"www.ploscompbiol.org/article/fetchObjectAttachment.action;jsessionid=99171C97AE28712E048E321DB6B192F3?uri=info%3Adoi%2F10.1371%2Fjournal.pone.0066655&representation=XML";

var startIndex = url.IndexOf("jsessionid=");
var endIndex = url.IndexOf('?', startIndex);
url.Remove(startIndex, endIndex - startIndex);

Note if a '?' is not found then it will throw an exception.

Using regex function to manipulate string in c#

4 Answers4